Electrochromic polymer containing benzodithiophene structure, preparation method, electrochromic film and application
A benzodithiophene, electrochromic technology, applied in optics, instruments, nonlinear optics, etc., can solve problems such as poor solubility, stability, and color is not rich, and achieve easy large-area film preparation, good redox Excellent properties, electrical and optical properties
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0041] The present invention also proposes a method for preparing an electrochromic polymer containing a benzodithiophene structure, the synthetic route is as follows figure 1 shown, including the following steps:
[0042] S1: Preparation of 4,7-bis(4-hexyl-5-bromo-thienyl)-2,1,3-benzothiadiazole monomer through bromination reaction;
[0043] S2: Prepare 4,7-bis(4-hexyl-bisthienyl)-2,1,3-benzothiadiazole monomer through reflux reaction;
[0044] S3: Preparation of 4,7-bis(5'-bromo-4-hexyl-bithienyl)-2,1,3-benzothiadiazole monomer through bromination reaction;
[0045] S4: preparing bis(trimethyltin-based)benzodithiophene by controlling different temperature programs;
[0046] S5: preparing the electrochromic polymer containing the benzodithiophene structure through Stille coupling polymerization.
[0047] details as follows:
[0048] S1: Synthesis of brominated monomers: 4,7-bis(4-hexylthienyl)-2,1,3-benzothiadiazole and N-bromo Succinimide is placed in an organic solvent...
Embodiment 1
[0096] This embodiment provides a preparation method of a P(BDT-O-BHT-Tz) type electrochromic polymer containing a benzodithiophene structure:
[0097] S1: Under nitrogen protection, 4,7-di(4-hexylthienyl)-2,1,3-benzothiadiazole (2mmol) and NBS (4.6mmol) were placed in 30ml chloroform, in the absence of The bromination reaction was carried out at room temperature for 48 hours under the light environment, the mixed solution was poured into 200ml of water for washing, the organic phase and the aqueous phase were separated, the organic phase was collected, the aqueous phase was extracted three times with 20ml of dichloromethane and the obtained extract Combined with the organic phase, dried with anhydrous magnesium sulfate, concentrated, then subjected to column chromatography (silica gel column, washed with methanol), and washed with methanol to obtain 4,7-bis(4-hexyl-5-bromo- Thienyl)-2,1,3-benzothiadiazole monomer, the yield is 72% (the general yield of prior art is 40%). 1 H...
Embodiment 2
[0103] This embodiment provides a preparation method of a P(BDT-T-BTh-Tz) type electrochromic polymer containing a benzodithiophene structure:
[0104] S1: Under nitrogen protection, put 4,7-bis(4-hexylthienyl)-2,1,3-benzothiadiazole (2mmol) and NBS (4.4mmol) in 20ml chloroform, in the absence of Carry out bromination reaction at room temperature under light for 36 hours, and purify to obtain 4,7-bis(4-hexyl-5-bromo-thienyl)-2,1,3-benzothiadiazole monomer;
[0105] S2: In a 100ml three-necked flask, mix 4,7-bis(4-hexyl-5-bromo-thienyl)-2,1,3-benzothiadiazole monomer (2mmol), thiophene tributyltin (4.4 mmol), bis(triphenylphosphine)palladium dichloride (0.12mmol) were added to 40mL of anhydrous tetrahydrofuran, and a vacuum pump and a nitrogen bottle were used for gas exchange, and reflux reaction was carried out under nitrogen protection for 36h, and purified to obtain 4, 7-bis(4-hexyl-bisthienyl)-2,1,3-benzothiadiazole monomer;
[0106] S3: Replace 4,7-bis(4-hexylthienyl)-2...
PUM
Property | Measurement | Unit |
---|---|---|
thickness | aaaaa | aaaaa |
thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com